001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.metadata;
016    
017    import com.liferay.portal.kernel.exception.SystemException;
018    import com.liferay.portal.kernel.lar.PortletDataContext;
019    import com.liferay.portal.kernel.log.Log;
020    import com.liferay.portal.kernel.log.LogFactoryUtil;
021    import com.liferay.portal.kernel.repository.model.FileEntry;
022    import com.liferay.portal.kernel.util.FileUtil;
023    import com.liferay.portal.kernel.util.StringBundler;
024    import com.liferay.portal.kernel.util.StringPool;
025    import com.liferay.portal.kernel.util.Time;
026    import com.liferay.portal.kernel.xml.Element;
027    import com.liferay.portal.kernel.xuggler.XugglerUtil;
028    import com.liferay.portlet.documentlibrary.util.AudioProcessorUtil;
029    import com.liferay.portlet.documentlibrary.util.VideoProcessorUtil;
030    
031    import com.xuggle.xuggler.IContainer;
032    
033    import java.io.File;
034    import java.io.InputStream;
035    
036    import java.text.DecimalFormat;
037    
038    import org.apache.tika.metadata.Metadata;
039    
040    /**
041     * @author Juan González
042     * @author Alexander Chow
043     */
044    public class XugglerRawMetadataProcessor extends BaseRawMetadataProcessor {
045    
046            public void exportGeneratedFiles(
047                            PortletDataContext portletDataContext, FileEntry fileEntry,
048                            Element fileEntryElement)
049                    throws Exception {
050    
051                    return;
052            }
053    
054            public void importGeneratedFiles(
055                            PortletDataContext portletDataContext, FileEntry fileEntry,
056                            FileEntry importedFileEntry, Element fileEntryElement)
057                    throws Exception {
058    
059                    return;
060            }
061    
062            protected String convertTime(long microseconds) {
063                    long milliseconds = microseconds / 1000L;
064    
065                    StringBundler sb = new StringBundler(7);
066    
067                    sb.append(_decimalFormatter.format(milliseconds / Time.HOUR));
068                    sb.append(StringPool.COLON);
069                    sb.append(
070                            _decimalFormatter.format(milliseconds % Time.HOUR / Time.MINUTE));
071                    sb.append(StringPool.COLON);
072                    sb.append(
073                            _decimalFormatter.format(milliseconds % Time.MINUTE / Time.SECOND));
074                    sb.append(StringPool.PERIOD);
075                    sb.append(_decimalFormatter.format(milliseconds % Time.SECOND / 10));
076    
077                    return sb.toString();
078            }
079    
080            protected Metadata extractMetadata(File file) throws Exception {
081                    IContainer container = IContainer.make();
082    
083                    try {
084                            Metadata metadata = new Metadata();
085    
086                            if (container.open(
087                                            file.getCanonicalPath(), IContainer.Type.READ, null) < 0) {
088    
089                                    throw new IllegalArgumentException("Could not open stream");
090                            }
091    
092                            if (container.queryStreamMetaData() < 0) {
093                                    throw new IllegalStateException(
094                                            "Could not query stream metadata");
095                            }
096    
097                            long microseconds = container.getDuration();
098    
099                            metadata.set(XMPDM.DURATION, convertTime(microseconds));
100    
101                            return metadata;
102                    }
103                    finally {
104                            if (container.isOpened()) {
105                                    container.close();
106                            }
107                    }
108            }
109    
110            @Override
111            @SuppressWarnings("unused")
112            protected Metadata extractMetadata(
113                            String extension, String mimeType, File file)
114                    throws SystemException {
115    
116                    Metadata metadata = null;
117    
118                    if (!isSupported(mimeType)) {
119                            return metadata;
120                    }
121    
122                    try {
123                            metadata = extractMetadata(file);
124                    }
125                    catch (Exception e) {
126                            _log.error(e, e);
127                    }
128    
129                    return metadata;
130            }
131    
132            @Override
133            @SuppressWarnings("unused")
134            protected Metadata extractMetadata(
135                            String extension, String mimeType, InputStream inputStream)
136                    throws SystemException {
137    
138                    Metadata metadata = null;
139    
140                    File file = null;
141    
142                    if (!isSupported(mimeType)) {
143                            return metadata;
144                    }
145    
146                    try {
147                            file = FileUtil.createTempFile(extension);
148    
149                            FileUtil.write(file, inputStream);
150    
151                            metadata = extractMetadata(file);
152                    }
153                    catch (Exception e) {
154                            _log.error(e, e);
155                    }
156                    finally {
157                            FileUtil.delete(file);
158                    }
159    
160                    return metadata;
161            }
162    
163            protected boolean isSupported(String mimeType) {
164                    if (XugglerUtil.isEnabled()) {
165                            if (AudioProcessorUtil.isAudioSupported(mimeType)) {
166                                    return true;
167                            }
168    
169                            if (VideoProcessorUtil.isVideoSupported(mimeType)) {
170                                    return true;
171                            }
172                    }
173    
174                    return false;
175            }
176    
177            private static Log _log = LogFactoryUtil.getLog(
178                    XugglerRawMetadataProcessor.class);
179    
180            private static DecimalFormat _decimalFormatter = new DecimalFormat("00");
181    
182    }